package com.thaiopensource.validate.nvdl;

import org.xml.sax.ContentHandler;

/**
 * Unwrap result action. This action an element but allows its content.
 */
class UnwrapAction extends ResultAction
{
  /**
   * Creates an unwrap action with a given mode usage.
   * 
   * @param modeUsage
   *        The action mode usage.
   */
  UnwrapAction (final ModeUsage modeUsage)
  {
    super (modeUsage);
  }

  /**
   * Perform this action.
   * 
   * @param handler
   *        ???
   * @param state
   *        the section state.
   */
  @Override
  void perform (final ContentHandler handler, final SectionState state)
  {
    state.addChildMode (getModeUsage (), handler);
  }

  /**
   * Get a new unwrap action with a mode usage with the current mode changed.
   * This is useful when we have modes extending other modes as we need to get
   * the actions from the base mode as actions on the new mode.
   */
  @Override
  ResultAction changeCurrentMode (final Mode mode)
  {
    return new UnwrapAction (getModeUsage ().changeCurrentMode (mode));
  }
}
